Merge pull request #268 from leadpony/update-validator-list

Update the supported drafts for Justify

Author: Julian

_data/validator-libraries-modern.yml

@@ -69,7 +69,7 @@
     - name: Justify
       url: https://github.com/leadpony/justify
       notes:
-      draft: [7]
+      draft: [7, 6, 4]
       license: Apache License 2.0
 - name: Kotlin
   implementations: